how to solve and answer:1
1/3(9-6x)=-11

Answers

Answer 1

Answer:

x = 2.875

Step-by-step explanation:

1 1/3 (9 - 6x) = -11

        12 - 8x = -11

            - 8x = -23

                x = 2.875


Related Questions

Here are the first six terms of an arithmetic sequence.
1
7 13 19 25 31
a) Find an expression, in terms of n, for the nth term of this sequence.
The nth term of a different sequence is 5n²
b) Work out the 4th term of this sequence. 4th term =

Answers

(a) The expression of nth term of arithmetic sequence is [tex]a_n=1+(n-1)6[/tex] and (b) 4th term of the series  [tex]a_n=5n^2\\[/tex] is 80.

What is arithmetic sequence?

It is a sequence of numbers which have same difference between two consecutive numbers. The common difference can be any positive number or negative number or even it can be 0.

The six terms of the arithmetic sequence are as follows:

1,7,13,19,25,31

Calculate the common difference as follows:

7-1=6

13-7=6

19-13=6

Since it is an arithmetic sequence hence common difference is 6.

Hence, [tex]d=6[/tex].

Now, substitute value of the first term and the common difference in the following expression of the nth term.

[tex]a_n=a+(n-1)d\\a_n=1+(n-1)6[/tex]

Now, the nth term of another sequence is as follows:

[tex]a_n=5n^2\\[/tex]

Substitute n=4 in the above equation.

[tex]a_4=5(4)^2\\=80[/tex]

Hence, (a) the expression of nth term is [tex]a_n=1+(n-1)6[/tex] and 4th term of the series  [tex]a_n=5n^2\\[/tex] is 80.

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i really need help with this

Answers

D is the answer
To solve this use algebra
First, take the 6y to the other side so now it’s 24-6y
Then, divide 12 to both sides which will then result in the equation of what answer choice D has

Can someone pls give me the answer to that?

Answers

The values of x and y which are the missing terms of the given triangle have their values as; x = ⁵/₂ and y = ⁹/₄

How to Interpret Division of line segments?

From the given triangle, we can see that the transverse line intersects both side lengths at their midpoints. Thus, we can say that;

3x - 4 = x + 1   ------(1)

⁴/₃y + 2 = 4y - 4   ------(2)

Let us solve equation 1 by rearranging to get;

3x - x = 1 + 4

2x = 5

x = ⁵/₂

Similarly, we can say that for equation 2;

4y - ⁴/₃y =  2 + 4

4y - ⁴/₃y = 6

Multiply through by 3 to get;

12y - 4y = 18

8y = 18

y = 18/8

y = ⁹/₄

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What is the solution to the system of equations graphed below?

Answers

the answer for your question above is (-1,-1) or you could say option no.3


The following list shows the number of goals scored by a soccer team in each of 9 games.
0, 0, 1, 1, 1, 3, 3, 4, 5
How does the median number of goals scored compare with the mean number of goals scored?

answer choices:
The median is equal to the mean

The median is less than the mean by 1.

The median is greater than the mean by 1.

The median is less than the mean by 2.

Answers

The median for a particular set is one less than the mean.

Given;

List of order for goals scored by a soccer team in 9 matches

= 0, 0, 1, 1, 1, 3, 3, 4, 5

To find the relation between mean and median;

The obtained mean = Sum of observations/number of observations

                                 = 0 + 0 + 1 + 1 + 1 + 3 + 3 + 4 + 5

                                 = 18/9

                                 = 2

Mean = 2

For median;

let us write the given observations in ascending order;

⇒  0, 0, 1, 1, 1, 3, 3, 4, 5

Here no. of observations is r = 9 which is an odd number.

Therefore observation at 5th is a middle position which has 1 as a value.

Median = 1

Therefore, the median is less than the mean by 1.

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Help my with this problem please 20 points

Answers

The difference of the polynomials [tex]2x^2[/tex] - 9x + 8 and [tex]6x^2[/tex] - 5x - 12 is -[tex]4x^2[/tex] - 4x 20

The first polynomial is given that

[tex]2x^2[/tex] - 9x + 8

The second polynomial is

[tex]6x^2[/tex] - 5x - 12

Here we have to find the difference, to find that we need to subtract the second polynomial from the second polynomial

Then,
[tex]2x^2[/tex] - 9x + 8 - ( [tex]6x^2[/tex] - 5x - 12 )

Open the bracket using the distributive property

[tex]2x^2[/tex] - 9x + 8 - [tex]6x^2[/tex] + 5x +12

Combine the like terms

[tex]2x^2[/tex] -  [tex]6x^2[/tex]  -9x +5x + 8 +12

Apply the arithmetic operations on like terms

-[tex]4x^2[/tex] - 4x 20

Hence, the difference of the polynomials [tex]2x^2[/tex] - 9x + 8 and [tex]6x^2[/tex] - 5x - 12  is   -[tex]4x^2[/tex] - 4x 20

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Find the value of X that makes lines u and v parallel 7-12

Answers

The value of x that makes lines u and v parallel is 6. Option A is correct.

First, let us understand the angles formed by parallel and transversal lines:

The different types of angles are alternate exterior angles, alternate interior angles, corresponding angles, consecutive angles, etc.

From the picture attached,

If the lines u and v are parallel and a third line (transversal) is intersecting these lines at two distinct points,

Both the angles given in the picture will be equal in measure as these angles are alternate exterior angles if u and v are parallel.

20x + 10 = 130 degrees

20x = 130 - 10 degrees

x = 120 / 20 = 6

So, the value of x is 6.

Thus, the value of x that makes lines u and v parallel is 6. Option A is correct.

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Can someone please help

Answers

The angle 1 is 88 degree, 2 is 42 degree and the 3 is 113 degree.

We know that the sum of the angles of the triangle is 180, so in one triangle where the 3 angle is missing we can write as:

42 + 25 +  ∠3 = 180

∠3 + 67 = 180 ,

∠3 = 113°

now in the triangle where 1 and 2 angles are missing, we can say that ∠2 = 42° because of transversely equal angles:

so, ∠ 2 = 42°

now again for a triangle,

∠1 + 42 + 50 = 180

∠1 + 92 = 180

∠1 = 88°

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A family has two cars. The first car has a fuel efficiency of 25 miles per gallon of gas and the second has a fuel efficiency of 30 miles per gallon of gas. During one particular week, the two cars went a combined total of 1525 miles, for a total gas consumption of 55 gallons. How many gallons were consumed by each of the two cars that week?

Answers

The volume of gas consumed by the first and second cars is 25 gallons and 30 gallons, respectively.

A family has two cars. The first car has a fuel efficiency of 25 miles per gallon of gas, and the second has a fuel efficiency of 30 miles per gallon of gas. During one particular week, the two cars travelled a combined total of 1525 miles, for a total gas consumption of 55 gallons.

Let the volumes of gas consumed by the first car and the second car be denoted by the variables "x" and "y". We can form the given two equations using the given data.

x + y = 55

25x + 30y = 1525

We will substitute the value of "x" from the first equation into the second equation.

x = 55 - y

25x + 30y = 1525

25(55 - y) + 30y = 1525

1375 - 25y + 30y = 1525

5y = 150

y = 30

x = 55 - y = 55 - 30 = 25

Hence, the gas consumed by the first and second cars is 25 gallons and 30 gallons, respectively.

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Line u has an equation of y = -x + 7. Line v is perpendicular to line u and passes through
(-8, -1). What is the equation of line v?
Write the equation in slope-intercept form. Write the numbers in the equation as simplified
proper fractions, improper fractions, or integers.

Answers

The equation of line v is y - x = 7 and The equation in slope-intercept form is y = x + 7.

Given:

y = -x + 7

Compare it to Slope-intercept form y = mx + c (∵ m = slope or gradient)

The gradient (m₁) is -1.

The gradient of the perpendicular line v is given by

m₂= -1/m₁

m₂=-1/-1

m₂=1

To find the duration of the perpendicular line v use the formula

y- y₁ = m(x-x₁)   (i.e., one slope, one point formula)

y₁=-1, x₁ =-8 , m₂ =1

y-(-1) = 1[x-(-8)]

y + 1 = x + 8

y - x = 8 - 1

y - x = 7

So, The equation of line v is y - x = 7 and The equation in slope-intercept form is y = x + 7.

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What is the answer pls?

Answers

The initial value of f(x) is -36.

The initial value of g(x) is -44

The range of f(x) is {y | -36 ≤ y ≤ -20}

The range of g(x) is {y | -44 ≤ y ≤ -20}

What is a function?

function is a relationship between inputs where each input is related to exactly one output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

{x | -6 ≤ x ≤  -2}

g(x) = 6x - 8

From the table, we get that,

The initial value of f(x) is -36.

The initial value of g(x).

g(x) = 6 x (-6) - 8 = -36 - 8 = -44

The range of f(x).

= {y | -36 ≤ y ≤ -20}

g(x) = 6x - 8

g(x) = 6 x (-6) - 8 = -36 - 8 = -44

g(x) = 6 x (-2) - 8 = -12 - 8 = -20

The range of g(x)

= {y | -44 ≤ y ≤ -20}

Thus,

The initial value of f(x) is -36.

The initial value of g(x) is -44

The range of f(x) is {y | -36 ≤ y ≤ -20}

The range of g(x) is {y | -44 ≤ y ≤ -20}

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A data set comparing a woman's shoe size to her height is represented by the table.


Shoe Size Height (inches)
7.5 63
9 72.5
11 70
7 62
9 69.5
10 72
12 72.5
13 73
13 70


What is the equation for the line of best fit for a woman's height, y, based on her shoe size, x?
y = 1.24x + 70.1
y = −1.24x − 70.1
y = 1.36x + 55.6
y = −1.36x − 55.6

Answers

The equation for the line of best fit for a woman's height, y, based on her shoe size, x is y = 1.36x + 55.6.

From the given table:

To find the equation we need to insert the points (x,y) in calculator.

Points are:

Sum of X = 91

Sum of Y = 624.5

Mean X = 10.1111

Mean Y = 69.3889

Sum of squares (SSX) = 42.8889

Sum of products (SP) = 57.6111

Regression Equation = ŷ = bX + a

b = SP/SSX = 57.61/42.89 = 1.34326

a = MY - bMX = 69.39 - (1.34*10.11) = 55.80699

y = 1.34326X + 55.80699

aproximate:

y = 1.36 + 55.6.

Therefore The equation for the line of best fit for a woman's height, y, based on her shoe size, x is y = 1.36x + 55.6.

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What is the expansion of the series "sum from n equals 1 to 4 of 3 to the n plus 1 power question mark" (photo includes proper equation)

9 + 27 + 81 + 243
9 + 12 + 15 + 18
3 + 9 + 27 + 81
3 + 6 + 9 + 12

Answers

The expansion of the series  ⁴∑ₙ = ₁ 3ⁿ ⁺ ¹ is; 9 + 27 + 81 + 243

How to expand series?

We are given the summation formula of the series as;

⁴∑ₙ = ₁ 3ⁿ ⁺ ¹

At n = 1, we will input 1 for n and we have;

3¹ ⁺ ¹ = 3² = 9

At n = 2, we will input 2 for n and we have;

3² ⁺ ¹ = 3³ = 27

At n = 3, we will input 3 for n to get;

3³ ⁺ ¹ = 3⁴ = 81

At n = 4;

3⁴ ⁺ ¹ = 3⁵ = 243

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a boat on the ocean is 4 mi from the nearest point on a straight shoreline; that point is 6 mi from a restaurant on the shore (see figure). a woman plans to row the boat straight to a point on the shore and then walk along the shore to the restaurant. if she walks at 3 mi/hr and rows at 2 mi/hr, at which point on the shore should she land to minimize the total travel time? if she walks at 3 mi/hr, what is the minimum speed at which she must row so that the quickest way to the restaurant is to row directly (with no walking)?

Answers

(a) she land to minimize the total travel time is 2.4min

(b) the minimum speed at which she must row so that the quickest way to the restaurant is to row directly is 6

(a)

T(x) = time rowing + time walking

     = [tex]\frac{\sqrt{x^{2} +16} }{2}[/tex] +[tex]\frac{6 - x}{3}[/tex]

T(x) = 1/2[tex]\sqrt{(x^{2} + 16)}[/tex]  + 2 - [tex]\frac{x}{3}[/tex]

  first derivation

T'(x) = 1/4[tex]\sqrt[-1/2]{(x^{2} + 16)}[/tex] .2x - 1/3

       = [tex]\frac{x}{2\sqrt{(x^{2} + 16)} }[/tex] - 1/3

T'(x) = 3x - 2 [tex]\sqrt{(x^{2} + 16)}[/tex] / 6[tex]\sqrt{(x^{2} + 16)}[/tex]

T'(x) = 0

3x - 2 [tex]\sqrt{(x^{2} + 16)}[/tex] / 6[tex]\sqrt{(x^{2} + 16)}[/tex]  = 0

3x - 2 [tex]\sqrt{(x^{2} + 16)}[/tex] =0

3x/2 = [tex]\sqrt{(x^{2} + 16)}[/tex]

9[tex]x^{2}[/tex]/4 = [tex]x^{2}[/tex] + 16

9[tex]x^{2}[/tex] = 4 [tex]x^{2}[/tex] + 64

5 [tex]x^{2}[/tex] = 64

[tex]x^{2}[/tex] =64/5

x = [tex]\sqrt{64/5}[/tex]

x = 8/[tex]\sqrt{5}[/tex]

x = 8[tex]\sqrt{5}[/tex]/5

total travel time = 6 - 8[tex]\sqrt{5}[/tex]/5 = 2.4 min

she land to minimize the total travel time is 2.4min

(b) T(x) = time rowing

           = [tex]\frac{\sqrt{x^{2} +16} }{2}[/tex]

first derivation

T'(x) = 1/4[tex]\sqrt[-1/2]{(x^{2} + 16)}[/tex] .2x

      = [tex]\frac{x}{2\sqrt{(x^{2} + 16)} }[/tex]

T'(x) = 0

[tex]\frac{x}{2\sqrt{(x^{2} + 16)} }[/tex] =0

x = 0

minimum speed = 6-x = 6-0=6

the minimum speed at which she must row so that the quickest way to the restaurant is to row directly is 6

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What is the vertex and the equation of the axis of symmetry of the graph of Y=x^2-6x-7


help asap

Answers

For the given quadratic equation:

y = x² - 6x - 7

The vertex is (3, -16) and the axis of symmetry is at x = 3.

How to get the vertex and axis of symmetry?

For a quadratic equation of the form:

y = a*x² + b*x + c

The x-value of the vertex (h, k) is:

h = -b/2a

And the axis of symmetry is the vertical line x = h.

In this case, the quadratic equation is:

y = x² - 6x - 7

The x-value of the vertex is at:

h = -(-6)/2*1 = 3

And the y-value of the vertex is at:

y = (3)² - 6*3 - 7

y = 9 - 18 - 7

y = -16

Then the vertex is at (3, -16)

And the axis of symmetry is x = 3

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Rita has $20,000 to invest for five years and she found an interest rate of
4%. How much money will she have at the end of five years if the interest
rate compounds monthly?

Answers

The amount of money Rita will get after 5 year with interest rate compounds monthly is $4,420.

Explain the term compound interest?The interest on either a deposit that is calculated using both the initial principle and the accrued interest from prior periods is known as compound interest. In other words, compounding is interest that is earned on interest. Different frequency patterns, such as daily, monthly, or yearly, are provided for compounding interest.

The formula for the calculation of the compound interest is-

A = P(1 + r/100n)∧nt

In which,

A  = amount after compounding

P = principal amount (  $20,000 )

n = number of time principal amount compounded in a year. ( 12 )

t = total time in years. (5 )

r = rate of interest (4%)

Put the value in eq.

A = 20,000(1 + 4/1200)∧5×12

A = 20,000×1.22

A = 24420

CI = A - P

CI = 24420 - 20000

CI = 4,420.

Thus, the amount of money Rita will get after 5 year with interest

rate compounds monthly is $4,420.

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An office manager booked 72 airline tickets. He booked 7 more tickets on Airlines A than on Airline B. On Airlines​ C, he booked 5 more than thrice as many tickets as on Airline B. How many tickets did he book on each​ airline?

He booked ___ tickets on Airlines​ A, ___ tickets on Airlines​ B, and ___ on Airlines C.

Answers

Answer:

Hence, he booked 19 tickets for Airlines A, 12 tickets for Airline B, and 41 tickets for Airlines C.

Step-by-step explanation:

Suppose the office manager booked a+b+c = 72 tickets.

a = b + 7

c = 3b + 5.

So, we have (b + 7) + b +(3b + 5) = 72, or

5b + 12 = 72, or

5b = 60, or

b = 12.

4(3/2 - 3x) Use the distributive property to remove the parentheses.
Simplify your answer as much as possible.

Answers

Answer:

[tex]-12x+6[/tex]

Step-by-step explanation:

Take a look at the attachment,,,

Hope this helps! :)

Answer:

[tex]6 + 12x[/tex]

Step-by-step explanation:

The distributive property states that A(B + C) = AB + AC.

Therefore,

[tex]4 \left( \dfrac{3}{2} - 3x \right) = 4 \left( \dfrac{3}{2} \right) + 4(3x)[/tex]

Now we can simplify each term:

[tex]4 \left( \dfrac{3}{2} \right) + 4(3x)[/tex]

[tex]= \dfrac{12}{2} + 12x[/tex]

[tex]= 6 + 12x[/tex]

PLEASE ALOT OF POINTS I need an answer quick
Graph the line through (0, -4) with m = -3​

Answers

Answer:

Step-by-step explanation:

hope it helps

According to the y =mx +b equation .
The answer is slope or m is -3 and the
y-intercept or b is (0,-4). So you write the equation y =-3x-4.

On a plane there were 6 airline
workers and 240 passengers.
If each worker looked after the same
number of passengers, how many
passengers did each worker look after?

Answers

Each worker looked 40 passengers

From the question, we have

On a plane there were 6 airline workers and 240 passengers.

each worker looked after the same number of passengers

number of passengers = 240/6

=40

Each worker looked 40 passengers

Divide:

Repetitive subtraction is the process of division. It is the multiplication operation's opposite. It is described as the process of creating equitable groups. When dividing numbers, we divide a larger number down into smaller ones such that the larger number obtained will be equal to the multiplication of the smaller numbers. One of the four fundamental mathematical operations, along with addition, subtraction, and multiplication, is division. Division is the process of dividing a larger group into smaller groups so that each group contains an equal number of things. It is a mathematical operation used for equal distribution and equal grouping.

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Vanya gathered some mushrooms. He dried 2/5 of them. Then he pickled 5/9 of the remaining mushrooms and fried 28 that were left. How many mushrooms did he gather.

Need this stat this is due tomorrow

Answers

Answer:

105

Step-by-step explanation:

1. x = mushroom he gather

2. he dry 2/5 from he gather, 2/5 from x

3. he pickled 5/9 of remaining mushroom

find the remaining mushroom value first, x-2/5x = 3/5x

then multiply with 5/9, 5/9(3/5x) = 15/45x

4. total mushroom - dry - pickled, he still have 28 to fry

5. write the equation like this

x - 2/5x - 15/45x = 28

45/45x - 18/45x -15/45x = 28

12/45x = 28

x = 28(45) / 12

x = 105

the graph of a linear function is shown . which word describes the slope of the line

Answers

Answer:

positive

Step-by-step explanation:

look at points c and d on the graph what is the distance in units between points c and d round to nearest hundredth

Answers

Answer:

7.07

Step-by-step explanation:

Draw a horizonal line and a vertical line to creat a right triangle.  The horizontal measurement would be 5 and so would the horizontal measurement.

Use the Pythagorean theorem

[tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]  The c side is the length that you are looking for

[tex]5^{2}[/tex] + [tex]5^{2}[/tex] = [tex]c^{2}[/tex]

25 + 25 = [tex]c^{2}[/tex]

50 = [tex]c^{2}[/tex]

[tex]\sqrt{50}[/tex] = [tex]\sqrt{c^{2} }[/tex]

7.07 = c  Rounded to the nearest hundredths

Tamara Was worried about the six-year-old dog. Suze, so she took her to three different
veterinarians. Each vet told her the approximate age o her dog in dog years based on Suze's health. Tamara graphed her dog's age in dog years and included the three vet approximations at age 6. Do you think this graph is a function? Why or why not?

Answers

Answer:

yes

Step-by-step explanation:

every x value has at least one y value

Please help!! assignment due for tomorrow, will mark brainliest for correct answer!! Need ASAP

Answers

The object moves at a speed of 25.352 m/s

Subject of Formula

The subject of a formula is the variable that is being worked out. It can be recognized as the letter on its own on one side of the equals sign. It is a variable which is expressed in terms of other variables involved in the formula.

Formulas are written so that a single variable, the subject of the formula is on the L.H.S. of the equation. Everything else goes on the right side of the equation. We evaluate the formula by substituting for the literal numbers on the right hand side.

In the question given, we have an equation;

s = d/t

d = 180m, t = 7.1s

s = 180 / 7.1

s = 25.352 m/s

The speed (s) of the object is 25.352 m/s

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Use the distance formula to find the distance, to the nearest tenth, from R(7, -2) to
W(-2, 3).

Answers

The distance between (7,-2) and (-2,3) is 11.2 units using the distance formula.

What is distance formula?

Distance is a measurement of how far apart two objects or points are, either numerically or occasionally qualitatively. Distance can refer to a physical length in physics or to an estimate based on other factors in common usage. a measurement of the distance between two points along a line or line segment. It's formula is "distance formula=√(x2-x1)²+(y2-y1)²".

Here,

distance formula=√(x2-x1)²+(y2-y1)²

=√(-2-7)²+(3--2)²

=√(-9)²+5²

=√81+45

=√126

=11.225 units

rounding to nearest tenth,

=11.2 units

Using the distance formula, the distance between (7,-2) and (-2,3) is 11.2 units.

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4. Each year a certain amount of money is deposited in an account which pays an
annual interest rate of r so that at the end of each year the balance in the account is
multiplied by a growth factor of x = 1+r. $1,000 is deposited at the start of the first
year, an additional $300 is deposited at the start of the next year, and $500 at the
start of the following year.
a. Write an expression for the value of the account at the end of three years in
terms of the growth factor x.
b. Determine (to the nearest cent) the amount in the account at the end of three
years if the interest rate is 4%.

Answers

a)An expression for the value of the account at the end of three years will be:

$1000[tex]x^3[/tex] +300[tex]x^2[/tex] + 500x

b) The amount in the account at the end of three years if the interest rate is 4% will be:

= 1000 × [tex]1.04^3[/tex] + 300 × [tex]1.04^2[/tex] + 500 × 1.04

= $ 1969.344

Given,

In the question:

A growth factor of x = 1+r. $1,000 is deposited at the start of the first year,

An additional $300 is deposited at the start of the next year, and $500 at the start of the following year.

To find the:

a) Write an expression for the value of the account at the end of three years in terms of the growth factor x.

b) Determine (to the nearest cent) the amount in the account at the end of three years if the interest rate is 4%.

Now, According to the question:

a) Growth factor x = 1 + r

Based on the given conditions:

An expression for the value of the account at the end of three years will be:

$1000[tex]x^3[/tex] +300[tex]x^2[/tex] + 500x

b) The amount in the account at the end of three years if the interest rate is 4% will be:

1 + 4% = 1 + 0.04 = 1.04

= 1000 × [tex]1.04^3[/tex] + 300 × [tex]1.04^2[/tex] + 500 × 1.04

= $ 1969.344

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10 The points A, B and C have coordinates A(2, 8), B(9, 7) and C(k, k-2).
a Given that AB = BC, show that a possible value of k is 4 and find the other possible value of k.
4, find the equation of the line that bisects angle ABC.
b For the case where k = 4, find the equation of the line that bisects angle ABC

Answers

By using distance formula the following results are obtained

a) Other value of k = 14

b) For k = 4, the equation of bisector of [tex]\angle ABC[/tex] is

[tex]y = \frac{1}{3}x + 4[/tex]

What is distance formula?

Distance formula is used to find the distance between two coordinates.

If the coordinates of one point be ([tex]x_1, y_1[/tex]) and coordinates of other point is  ([tex]x_2, y_2[/tex]), then  distance between the two points is

[tex]\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2[/tex]

The points A, B and C have coordinates A(2, 8), B(9, 7) and C(k, k-2).

Length of AB =

[tex]\sqrt{(9 - 2)^2 + (7 - 8)^2}\\\\\sqrt{49 +1}\\\\\sqrt{50}[/tex]

Length of BC =

[tex]\sqrt{(k - 9)^2 + (k - 2 - 7)^2}\\\\\sqrt{(k - 9)^2 + (k - 9)^2}\\\\\sqrt{2(k-9)^2}\\\\(k-9) \sqrt{2}[/tex]

By the problem,

[tex](k-9)\sqrt{2} = \sqrt{50}\\k - 9 = \sqrt\frac{50}{2}}\\k - 9 = \sqrt{25}\\k - 9 = \pm 5\\k - 9 = 5 \ or \ k - 9 = -5\\k = 5 + 9 \ or \ k = 9 -5\\k = 14 \ or \ k = 4[/tex]

The other value of k is 14

b) When  k = 4

Coordinate of C = (4, 2)

Since AB =AC , the bisector of [tex]\angle ABC[/tex] passes through the midpoint of AC

Midpoint of AC =

[tex](\frac{2 + 4}{2} , \frac{8+2}{2})\\(3, 5)[/tex]

The line also passes through (9, 7)

Slope of the  bisector of [tex]\angle ABC[/tex] = [tex]\frac{7 -5}{9 - 3}[/tex]

                                                    = [tex]\frac{1}{3}[/tex]

Equation of the bisector of [tex]\angle ABC[/tex]

[tex]y - 5 = \frac{1}{3}(x - 3)\\\\y - 5 = \frac{1}{3}x -1\\\\y = \frac{1}{3} x - 1 + 5\\\\y = \frac{1}{3} x + 4[/tex]

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Mark is reading a new book for his Literature class. The book has a total of 160 pages. Mark’s goal is to complete of the book by the end of the week. If Mark has read 24 pages so far, what fraction of the 1/4 book does Mark have left to read by the end of the week in order to reach his goal?

Answers

The fraction left for Mark to read is 17/20.

How to calculate the fraction?

From the information illustrated, he wants to complete of the 160 pages book by the end of the week and Mark has read 24 pages so far.

The number of pages left will be:

= 160 - 24

= 136 pages

Therefore, the fraction of pages left will be:

= Number of pages left / Total pages

= 136 / 160

= 17/20

The fraction is 17/20.

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for a fixed location, the number of sunlight hours in a day fluctuates throughout the year. suppose that the number of daily sunlight hours in a particular location can be modeled by the following. l(t)

Answers

On October 24, 218 days after March 20, there will be 10 hours of sunlight.

The number of daily sunlight hours of a particular location is modelled by the trigonometric equation,

l(t) = 12 + 3.5sin (2[tex]\pi[/tex]/365t)

Here , L(t)= Number of sunlight hours in a day.

           t = Number of days after 20th March .

Now we are required to determime the day  during first 365 on which there are 10 sunlight hours ,that is, we need the value of "t" for which L(t) =10 hours. So in the given equation by putting L(t)= 10 and solving for t , follows as,

l(t) = 12 + 3.5sin (2[tex]\pi[/tex]/365t)

10 = 12 + 3.5sin (2[tex]\pi[/tex]/365t)

10-12 = 3.5sin (2[tex]\pi[/tex]/365t)

-2 =  3.5sin (2[tex]\pi[/tex]/365t)

-2/3.5 = sin (2[tex]\pi[/tex]/365t)

-0.574 = sin (2[tex]\pi[/tex]/365t)

For the inverse function of y = sin x

sin ⁻¹(y) =x + 2n[tex]\pi[/tex]

Now as we are required to calculate the day having 10 sunlight hours in first 365 days so putting n=0 we get,

t = -35.3521 or t =217.9422

Now t can not be negative as we want to find the day after march 20 having 10 sunlight hours. So neglecting t=-35.3521 . Now we get t=217.9422 .

Rounding off we get ,t=218 which is the required answer.

Hence, 218 days after march 20 i.e on October 24 it will have 10 sunlights.

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